code: def full_confusion_matrix(self):
      return self._full_confusion
  
file_path: torch-points3d/torch_points3d/metrics/s3dis_tracker.py
imports: from typing import Dict, Any
  import logging
  import torch
  from torch_geometric.nn.unpool import knn_interpolate
  from torch_points3d.metrics.confusion_matrix import ConfusionMatrix
  from torch_points3d.metrics.segmentation_tracker import SegmentationTracker
  from torch_points3d.metrics.base_tracker import BaseTracker, meter_value
  from torch_points3d.datasets.segmentation import IGNORE_LABEL
  from torch_points3d.core.data_transform import SaveOriginalPosId
  from torch_points3d.models import model_interface
label_desc: Use image node_id 5 for calling the S3DISTracker obj's underlying member method code with example usage: obj.full_confusion_matrix() and returns: self